16099943 has 4 divisors (see below), whose sum is σ = 16619328. Its totient is φ = 15580560.

The previous prime is 16099927. The next prime is 16099981. The reversal of 16099943 is 34999061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34999061 = 2203 ⋅15887.

It is a cyclic number.

It is not a de Polignac number, because 16099943 - 2⁴ = 16099927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16099943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16099903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259646 + ... + 259707.

It is an arithmetic number, because the mean of its divisors is an integer number (4154832).

Almost surely, 2^16099943 is an apocalyptic number.

16099943 is a deficient number, since it is larger than the sum of its proper divisors (519385).

16099943 is an equidigital number, since it uses as much as digits as its factorization.

16099943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519384.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 16099943 is about 4012.4734267033. The cubic root of 16099943 is about 252.5077891921.

The spelling of 16099943 in words is "sixteen million, ninety-nine thousand, nine hundred forty-three".